Grundfos SL1 Serie Instrucciones De Instalación Y Funcionamiento página 5

2.1 Product drawing
5
2
6
4
Fig. 1 SL1 pump
Pos. Description
1 Lifting bracket
2 Nameplate
3 Oil screws
4 Discharge flange
5 Cable plug
6 Clamp
7 Pump housing
2.2 Control and monitoring
The pumps can be controlled via the Grundfos controllers LC,
LCD and dedicated controls DC and DCD. See section
controllers.
Pumps with sensor are supplied together with an IO 113.
See section 8.6 IO 113.
2.3 Applications
SL1 and SLV pumps are designed for pumping these liquids:
• large quantities of drainage and surface water
• domestic wastewater with discharge from toilets
• wastewater with a high content of fibres (SuperVortex impeller)
• municipal and commercial sewage and wastewater.
2.4 Operating conditions
The Grundfos SL1 and SLV pumps are suitable for the following
operating situations:
• S1 operation (continuous operation), the pump must always
be covered by the pumped liquid to the top of the motor.
See fig. 2.
• S3 operation (intermittent operation), the pump must always
be covered by the pumped liquid up to the top of the cable
entry. See fig. 2.
For further information about S1 and S3 operation, see section
9.2 Operating modes.
1
3
7
pH value
SL1 and SLV pumps in permanent installations can be used for
pumping liquids with the following pH values:
Pump
type
SL1/SLV Standard
SLV
1)
Liquid temperature
0 °C - +40 °C.
For short periods (maximum 3 minutes) a temperature of up to
+60 °C is permissible (non-Ex versions only).
8.2 Pump
Ambient temperature
For non-explosion proof pumps, the ambient temperature may
exceed +40 °C for a short period (max. 3 minutes).
Density and viscosity of pumped liquid
When pumping liquids with a density and/or a kinematic viscosity
higher than that of water, use motors with correspondingly higher
outputs.
Flow velocity
We recommend you to keep a minimum flow velocity to avoid
sedimentations in the piping system. Recommended flow
velocities:
•
•
Free spherical passage
From 50 to 100 mm, depending on pump size.
Operating mode
Maximum 20 starts per hour.
Fig. 2 Stop levels
Material
Material
variant
Cast-iron impeller and pump
housing
Stainless-steel impeller and
Q
cast-iron pump housing
For fluctuating pH values, the range is pH 4 to 14.
Warning
Explosion-proof pumps must never pump liquids of a
temperature higher than +40 °C.
Warning
For explosion-proof pumps, the ambient temperature
on the installation site must be in the range from -20
°C to +40 °C.
For explosion-proof pumps with WIO sensor, the
ambient temperature at the installation site must be
in the range from 0 °C to +40 °C.
in vertical pipes: 1.0 m/s
in horizontal pipes: 0.7 m/s
S1 operation
S3 operation
pH value
1)
6.5 - 14
1)
6-14
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